A Mail that I tried to send (unsuccessfully) now keeps flashing up for a second and repeats over and over

I have macOS Mojave. A while ago I tried to send a mail message but that was not successful. This message now keeps on flashing onto the screen. I have tried other suggested remedies going through Finder / Library / Mail. Two items are listed there "Persisenceinfo.plist" - which has one item (unrelated) in it dated two months before this flashing occurrence and "V6" (no V3) - which has 5 items in it, four of which are a string of letters and number and a 5th one "MailData" which in turn has several items but none of them relate to the mail that is flashing.


The flashing mail interrupts one when one is typing on any other application - this is most irritating.


Would be most grateful for help to get rid of this bothersome feature!

Posted on Mar 27, 2020 11:10 PM

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Mar 28, 2020 7:14 AM in response to Del at 6

Del at 6 wrote:

I have macOS Mojave. A while ago I tried to send a mail message but that was not successful. This message now keeps on flashing onto the screen. I have tried other suggested remedies going through Finder / Library / Mail. Two items are listed there "Persisenceinfo.plist" - which has one item (unrelated) in it dated two months before this flashing occurrence and "V6" (no V3) - which has 5 items in it, four of which are a string of letters and number and a 5th one "MailData" which in turn has several items but none of them relate to the mail that is flashing.

The flashing mail interrupts one when one is typing on any other application - this is most irritating.

Would be most grateful for help to get rid of this bothersome feature!


Have you tried quitting Mail.app and rebooting the machine—


and try again

Mar 31, 2020 1:06 AM in response to Del at 6

I am posting this in case others have experienced a similar mail problem which I have managed to fix.


No "Outbox" is shown on the Mail side panel unless there is a mail waiting to be sent.


The particular item that kept on flashing up was such an unsent mail but I did not expect to see it in an outbox. Fortunately I noticed the Outbox and opened it and there was the problematic mail. I moved it to Trash and with that solved the problem.

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A Mail that I tried to send (unsuccessfully) now keeps flashing up for a second and repeats over and over

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